@Hohige
Brass Dragonborn War Cleric.
Feats are Lucky, Alert, Expert (Athletics), +2 Str, Resilient Con. Str 20, Wisdom 16, Con 14, Dex 14, dumped Int, Charisma.
Ill use
Divine intervention while in my Permanent
Temple of the Gods (which blocks any attempts by you to use divination magic to find me, and also blocks any attempt by you to plane shift to me in advance) on my Deities home plane of Celestia (automatically successful at 20th level), and then ask my God to
Plane shift you while you're on the toilet to my location (
alone), adjacent to me
after I have cast
AMF.
The Deities magic is not blocked by the AMF (Deities magic is excluded from AMF's) so you appear next to me, alone, and we roll initiative. We can assume the Deity (who has divine control of his realm, can safely put you next to me, and the save DC is sufficiently high coming from a Greater God that you cant pass the save)
Lets assume I'm also alone and none of my bound Planar and celestial allies are present. This is personal.
I have +7 to initiative (and a Lucky re-roll), plus you're almost certainly
surprised to suddenly find yourself in Celestia halfway through doing a poo, so odds are I go first.
I grapple you (Athletics +17, Lucky re-roll) and proceed to wail on you (at +11) vs your AC of around (10+Dex) 12 or 13 (hitting with each attack). It'll be a bonus action attack the first Round (after I take the Attack thanks to my
War Priest ability) dealing 3d8+5 Slashing damage.
Next round its two attacks dealing 4d8+10 total, as it will be the round after, then it's down to just the one attack per round.
You're highly unlikely to break the grapple (and even if you do, it takes an action, and there is little you can do seeing as Extraplanar travel is banned in the Temple to creatures that dont worship my God or my God, and I am in an AMF so am immune to all your spells), and sadly for you I'm
also resistant to Lightning, and any Slashing, bludgeoning or piercing damage you might deal.
I have a ton more HP than you, a far better AC in my Full Plate, and deal much more damage than you.
We have a winner?